I do have a compiled project in vb.Net Standard edition. I haven't done anything special when compiling it.I haven't done anything with assemlies or licensing.
Is there ANY way someone can disassemble my project and take my code?
Unless your assembly is obfuscated it is very simple to decompile it, and there are several free decompilers available. Check out the MSDN docs on obfuscation and related techniques for detailed information and also for the free/commerical obfuscators available. The attached link is for the Essential Obfusctate white paper. Unfortunately, Essential Obfuscate is still in beta and is not available as of this time, but the whitepaper should give you a good idea of the issues involved here.